EUVD-2026-66033
GHSA-46ww-4fff-23g3
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Network-delivered via extension install (AV:N/PR:N), requires active user consent (UI:R), confidentiality-only impact with no integrity or availability effect.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Lifecycle Timeline
4DescriptionCVE.org
Missing authorization in BrowserTag in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to obtain sensitive information via a crafted Chrome extension. (Chromium security severity: Low)
AnalysisAI
Missing authorization in the BrowserTag component of Google Chrome prior to 152.0.7977.65 enables remote attackers to extract sensitive information by distributing a crafted Chrome extension via social engineering. The flaw bypasses authorization checks within BrowserTag, allowing the malicious extension to access data it should not be permitted to read. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the victim be running Google Chrome prior to 152.0.7977.65 AND be socially engineered into installing a crafted Chrome extension - this is the non-negotiable prerequisite encoded in the UI:R CVSS metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.5 (Medium) reflects a network-reachable, low-complexity attack with no privilege requirement but mandatory user interaction (UI:R) and confidentiality-only impact (C:H/I:N/A:N). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a malicious Chrome extension and distributes it via a phishing page, fake software bundle, or social media, persuading a target to install it manually. Once installed, the extension exploits the missing BrowserTag authorization check to query sensitive browser state - such as tab metadata, browsing context identifiers, or cross-origin signals - that it would not normally be permitted to access. … |
| Remediation | Update Google Chrome to version 152.0.7977.65 or later, available via Chrome's built-in auto-update mechanism or the vendor advisory at https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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